Best Time to See Bold Jumping Spiders in Colorado
May, June and September is the best time to see bold jumping spiders in Colorado. Based on 5,008 verified iNaturalist observations, here is exactly when bold jumping spiders are most active across the year in Colorado.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 20, 2026.
Bold Jumping Spider · Jared Shorma CC BY
Bold Jumping Spider · spinozie CC BY
Bold Jumping Spider · Anders Hastings CC BY
5,008 verified observations of bold jumping spiders in Colorado, recorded across 12 months of the year on iNaturalist.
When bold jumping spiders are recorded in Colorado
Peak month
May
1,125 records (22.5% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 21 | 0.4% |
| February | 22 | 0.4% |
| March | 190 | 3.8% |
| April | 570 | 11.4% |
| Maypeak | 1,125 | 22.5% |
| Junepeak | 793 | 15.8% |
| July | 469 | 9.4% |
| August | 531 | 10.6% |
| Septemberpeak | 615 | 12.3% |
| October | 540 | 10.8% |
| November | 99 | 2% |
| December | 33 | 0.7% |
Bold Jumping Spiders you are most likely to see
| Species | Verified observations |
|---|---|
| Bold Jumping Spider | 5,008 |
Weather to expect, source Open-Meteo
Typical weather in Colorado
Recent typical conditions by month, so you can plan a trip around both when bold jumping spiders are active and what the weather is doing. The best months to look for bold jumping spiders sit around 31 to 69 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 27°F | 5°F | 0.5" |
| Feb | 27°F | 3°F | 0.9" |
| Mar | 34°F | 9°F | 1.3" |
| Apr | 46°F | 20°F | 1.1" |
| Maybest time | 57°F | 31°F | 2.5" |
| Junbest time | 69°F | 42°F | 2.1" |
| Jul | 76°F | 49°F | 2.5" |
| Aug | 75°F | 48°F | 1.7" |
| Sepbest time | 69°F | 41°F | 1.1" |
| Oct | 54°F | 27°F | 0.8" |
| Nov | 40°F | 18°F | 0.6" |
| Dec | 30°F | 10°F | 0.9" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Colorado. Weather varies year to year, so treat these as a guide.
Sightings of bold jumping spiders in Colorado peak in May, when 1,125 of the year's 5,008 verified observations are logged — about 22.5% of the annual total. Activity stays high through May, June and September.
The quietest stretch is January and February, when bold jumping spiders are hardest to find — January sees just 21 records. If a reliable sighting matters, plan around the peak window rather than the off-season.
The bold jumping spiders you are most likely to encounter in Colorado are Bold Jumping Spider — the most-recorded species in the state. Each keeps its own seasonal rhythm, but the month-by-month pattern above reflects every reported sighting together.
Where to go
Best places to see bold jumping spiders in Colorado
- Bent's Old Fort National Historic Site — National Historic Site
- Black Canyon Of The Gunnison National Park — National Park
- Colorado National Monument — National Monument
- Curecanti National Recreation Area — National Recreation Area
- Dinosaur National Monument — National Monument
- Great Sand Dunes National Park & Preserve — National Park & Preserve
Frequently asked questions
What is the best month to see bold jumping spiders in Colorado?+
May is the single best month, and the broader peak window runs through May, June and September, based on 5,008 verified iNaturalist observations.
When are bold jumping spiders hardest to see in Colorado?+
January is the quietest month for bold jumping spiders in Colorado, with only 21 verified records.
Are bold jumping spiders active year-round in Colorado?+
Bold jumping spiders are recorded in 12 of 12 months in Colorado, so they can be seen year-round, with a clear peak in May.
More wildlife in Colorado